1/*
2 * Generic show_mem() implementation
3 *
4 * Copyright (C) 2008 Johannes Weiner <hannes@saeurebad.de>
5 * All code subject to the GPL version 2.
6 */
7
8#include <linux/mm.h>
9#include <linux/quicklist.h>
10#include <linux/cma.h>
11
12void show_mem(unsigned int filter)
13{
14	pg_data_t *pgdat;
15	unsigned long total = 0, reserved = 0, highmem = 0;
16
17	printk("Mem-Info:\n");
18	show_free_areas(filter);
19
20	for_each_online_pgdat(pgdat) {
21		unsigned long flags;
22		int zoneid;
23
24		pgdat_resize_lock(pgdat, &flags);
25		for (zoneid = 0; zoneid < MAX_NR_ZONES; zoneid++) {
26			struct zone *zone = &pgdat->node_zones[zoneid];
27			if (!populated_zone(zone))
28				continue;
29
30			total += zone->present_pages;
31			reserved += zone->present_pages - zone->managed_pages;
32
33			if (is_highmem_idx(zoneid))
34				highmem += zone->present_pages;
35		}
36		pgdat_resize_unlock(pgdat, &flags);
37	}
38
39	printk("%lu pages RAM\n", total);
40	printk("%lu pages HighMem/MovableOnly\n", highmem);
41#ifdef CONFIG_CMA
42	printk("%lu pages reserved\n", (reserved - totalcma_pages));
43	printk("%lu pages cma reserved\n", totalcma_pages);
44#else
45	printk("%lu pages reserved\n", reserved);
46#endif
47#ifdef CONFIG_QUICKLIST
48	printk("%lu pages in pagetable cache\n",
49		quicklist_total_size());
50#endif
51#ifdef CONFIG_MEMORY_FAILURE
52	printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
53#endif
54}
55